uncertified haskell engineer | certified researcher

Gothenburg, Sweden
Joined January 2010
Pinned Tweet
Matti Palli retweeted
Friends don't let friends use dynamic types – at Iceland
22
312
13
1,891
instead of solving fun programming puzzles, you’ll be finding the subtle architectural misstep in 10kn lines of agent-written code
The coding interview is dead, at least for my team at Anthropic. I've seen enough to know that it no longer provides signal. I removed it from loops this month. I have a spicy, optimistic take - I think there's an opportunity for junior engineers: felixrieseberg.com/hunger-be…
19
798
it’s like if your phone had a built-in AI that was severely limited compared to what the models are doing
Windows Copilot was so terrible it might very well have seeded the AI opposition we now see among normies. Useless functionality, hyped to the moon, and a dumb key on every keyboard that did nothing worthwhile. youtube.com/watch?v=erRVsllM…
1
6
499
Matti Palli retweeted
> just spoke to an insider > says there is no inside > klein bottle
9
33
2
548
8,125
the spec to code pipeline is starting to feel very real
How do you _guarantee_ your agent's code is correct? You prove it. Introducing Proof Driven Development Kit (PDD Kit) from @MSFTResearch. PDD Kit helps turn your plan into a formal spec, then proves the agent's code meets that spec for every input. No vibe verification. PDD Kit is integrated with @GitHubNext's Chopin, so you can plan as a team. PDD Kit takes an app's login flow from intent to a verified pull request: It discusses your code, infers your intent as it goes, and proposes a formal spec in Verus, a proof language for Rust. Once you approve the spec, the Verus verifier automatically proves the code meets it. Where proof isn't possible, it falls back to empirical verification with tests and computer-use agents (CUAs). It works on Rust today. No new language, no change in how you produce the underlying code, making formal methods more accessible. The goal is a verified software factory, where engineers review specifications instead of code. Come see it in action at GitHub Universe, Oct 28–29. Swing by the Speakeasy and ask for GitHub Next!
2
225
recently i’ve been attracting a lot of weird interactions on twitter (wpot?), and they always start questioning my intelligence or knowledge from zero context gives very bad “i’m insecure about my own intelligence so i must (try to) insult others” vibe
Replying to @tritlo
Counting the number of solutions #2SAT is as hard as #3SAT though it doesn't seem you know much if you dont understand why one is linear the other subexponential
3
13
597
well-typed programs cannot go wrong
1
1
1
11
618
drug discovery is cool, but sadly verification is very expensive here. Not an NP problem at all
Over the past few months, Anthropic scientists have engaged in deep research partnerships with six organizations developing new medicines. We've also begun drug discovery efforts of our own. In doing so, we’ve learned much more about how Claude can support the many stages of drug development. In this blog post, we share some early results from these efforts, and describe how this work fits in with our wider ambitions in the life sciences. anthropic.com/research/early…
1
4
469
the good thing about running a local model is that you don't have to have any blinking light or bell to know the turn is finished, you just wait till your fans spin down
2
8
360
i highly recommend reading the actual Frankenstein. It’s so much deeper than the movies make it seem extremely relevant to the AI era, and eerie that the first sci-fi was about a man’s creation turning bad after being rejected by society / wanting to procreate
1
1
7
324
This is EVEN BIGGER finally verified circuits!! And C!! this will change hardware forever
Formally verify SystemVerilog and SVA (or autoforamlized properties). Prove memory safety about your C programs. Our AI theorem prover is now publicly available. Try it out at harmonic.fun
There's a new version of this post
1
66
Wow, can't believe there is visible wear on the mechanism after using it ~40times/day for 5 years
the iPhone Duo broke after 75k folds very disappointing to see for a ~ $2000 phone
Readers added context they thought people might want to know
During the test, the phone was exposed to dust and dirt, and just before it cracked, it spent 20 minutes in a bowl of ice. Dust: youtu.be/YxcHtAooha4?t=… Ice: youtu.be/gjUirIOVHNo?t=…
1
9
815
this is quite HUGE actually not just the fact that it's been done, but also that it was done automatically the future is bright!
The largest math proof in human history is now computer-verified. Today, Axiom announces a complete Lean auto-formalization of the Classification of Finite Simple Groups, the "periodic table of symmetry." About 15,000 pages, built by over 100 mathematicians across generations.
1
1
1
20
1,344
my vision of the future: opus 5.5 or some equivalent model (useful for most), with the weights burned into an ASIC. Install it like a water heater in every house. tokens on demand for the masses
2
1
18
794
the best agent tasks are NP-complete
I feel like I need a word for the type of task that agents are really good at I.e. where it has 100% of the data, it can run experiments, verify independently, and hill-climb towards its destination On these tasks my trust level is totally maxed-out and the results are incredible Just need a word for them
1
13
764
if only there was some sort of system where you could attach some sort of proofs to your code to prevent this
Cursor just fully broke last T3 Code nightly. I wish I was joking. Their vibe code broke our app. Fix building now. New pipeline to prevent this coming soon after. Gonna be a long night 🙃
1
26
996
i think P=NP but the translation to P is so incredibly ugly (in our basis) that no self-respecting theoretical computer scientist has been willing to go down that path
If P=NP but with the caveat that the proof is so convoluted, complex and long that only a machine is be able to verify it, what does that mean Also why could then we never get any NP problem doen to P And what is the proof or algo that will get down NP problems to P ones?
1
5
342
i’ve always thought that mathematics was more of an art than science, so makes sense that they’re more like the artists than the scientists
One of the most interesting things about this post is the difference in culture it highlights between mathematicians, computer scientists, and physicists. The jokes write themselves
1
14
567
Knowing @satnam6502, this is going to be HUGE. Exciting!
Tomorrow @HarmonicMath launches something I've spent the last year working on.
2
12
896
I don't think it's ugly, I think we're just working in some ugly basis. Like there will turn out to be a new constant, like e or pi (call it k), and all these algorithms have a k^... shape
It turns out math was only beautiful because we weren't looking for the incredibly ugly stuff
1
7
592
Exciting! But yeah complexity is so funny like solving formulas that look like this (2-SAT): (a ∨ b) ∧ (¬a ∨ c) ∧ (¬b ∨ ¬c) linear time, trivial but this (3-SAT): (a ∨ b ∨ ¬c) ∧ (¬a ∨ c ∨ d) ∧ (b ∨ ¬c ∨ ¬d) NP-complete! Exponential time! (better now though)
Announcing three major scientific discoveries, one each in mathematics (harmonic analysis), computer science (complexity theory), and physics (quantum field theory). AI starting to help us improve our understanding of the universe! openai.com/index/building-sc…
4
1
1
58
6,897